Improvements in lamp carbons for optical projection apparatus,申请号GB19340035806-传众专利搜索

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发明名称	Improvements in lamp carbons for optical projection apparatus
摘要
申请公布号	GB449161(A)	申请公布日期	1936.06.23
申请号	GB19340035806	申请日期	1935.10.29
申请人	CHARLES HAROLD CHAMPION	发明人
分类号	H05B31/06	主分类号	H05B31/06
代理机构		代理人
主权项
地址

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